Here's a fantastic summary of vSphere 5.5 best practices, including some NetApp specific recommendations. Since it’s not immediately clear - the blog post is actually a table of contents (each recommendation is a link leading to detailed blog post).
--> thank you Gostev for letting us know of this nice content.

If you are using HP Proliant DL380 G7's for your vSphere 5.5 hosts, be aware of this potential PSOD issue and patch your hosts soon with this fix from HP.
potential PSOD issue
this fix from HP
--> Thank you Gostev for letting us know of this problem and fix :)

With the recently released VMware vSphere 5.5, the component Single-Sign-On (SSO) has been completely rewritten. The biggest change is that the RSA database has been removed, which eliminates much of its complexity. There is also a new identity type (Active Directory (Integrated Windows Authentication)) that works without specifying the AD Controllers directly, like the old vSphere 4.x / 5.0 authentication. The whole process is much easier. This post shows how to enable Active Directory Authentication within the new vSphere 5.5... [Lire la suite]

The Backup Exec 2012 Service Pack 3 (SP3) is now available for download and adds support for vSphere 5.5.
How to download the service pack
If you are an existing customer and would like to download the latest Backup Exec service pack, please visit:http://www.symantec.com/docs/TECH205351. From there download the EXE at the bottom of the page.
--> please see the rest on the blog : http://www.symantec.com/connect/blogs/backup-exec-2012-adds-support-vmware-vsphere-55

Today Veeam released Veeam Backup & Replication R2. This version has a lot of new features. One of the most interesting is support for VMware vSphere 5.5. The update also contains bugfixes.
Veeam has named this release a patch. To obtain the patch please download it from: Download
More information here
What is new:
VMware
vSphere 5.5 support, including support for 62TB virtual disks and virtual hardware v10 virtual machines.
vCloud Director 5.5 support.
Support for Windows Server 2012 R2 and Windows 8.1 as guest... [Lire la suite]

With VMware ESXi 5.5 and vSphere Hypervisor 5.5 it is possible to upgrade the Virtual Machine to hardware version 10. The vSphere Client cannot edit settings of VMs that have hardware version 10. When you try to edit a hardware version 10 in the vSphere 5.5 client the following warning appear:
You cannot use the vSphere Client to edit the settings of virtual machines of version 10 or higher…….
To edit settings of a version 10 VM you need the VMware vSphere Web Client! vSphere Hypervisor 5.5 does... [Lire la suite]